1/*- 2 * Copyright (c) 2016, Hiroki Mori 3 * Copyright (c) 2009 Oleksandr Tymoshenko 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD$"); 30 31#include "opt_ddb.h" 32#include "opt_ar531x.h" 33 34#include <sys/param.h> 35#include <sys/conf.h> 36#include <sys/kernel.h> 37#include <sys/systm.h> 38#include <sys/bus.h> 39#include <sys/cons.h> 40#include <sys/kdb.h> 41#include <sys/reboot.h> 42#include <sys/boot.h> 43 44#include <vm/vm.h> 45#include <vm/vm_param.h> 46#include <vm/vm_page.h> 47#include <vm/vm_phys.h> 48#include <vm/vm_dumpset.h> 49 50#include <net/ethernet.h> 51 52#include <machine/clock.h> 53#include <machine/cpu.h> 54#include <machine/cpuregs.h> 55#include <machine/hwfunc.h> 56#include <machine/md_var.h> 57#include <machine/trap.h> 58 59#include <mips/atheros/ar531x/ar5315reg.h> 60 61#include <mips/atheros/ar531x/ar5315_setup.h> 62#include <mips/atheros/ar531x/ar5315_cpudef.h> 63 64extern char edata[], end[]; 65 66uint32_t ar711_base_mac[ETHER_ADDR_LEN]; 67/* 4KB static data aread to keep a copy of the bootload env until 68 the dynamic kenv is setup */ 69char boot1_env[4096]; 70 71void 72platform_cpu_init() 73{ 74 /* Nothing special */ 75} 76 77void 78platform_reset(void) 79{ 80 ar531x_device_reset(); 81 /* Wait for reset */ 82 while(1) 83 ; 84} 85 86/* 87 * Obtain the MAC address via the Redboot environment. 88 */ 89static void 90ar5315_redboot_get_macaddr(void) 91{ 92 char *var; 93 int count = 0; 94 95 /* 96 * "ethaddr" is passed via envp on RedBoot platforms 97 * "kmac" is passed via argv on RouterBOOT platforms 98 */ 99 if ((var = kern_getenv("ethaddr")) != NULL || 100 (var = kern_getenv("kmac")) != NULL) { 101 count = sscanf(var, "%x%*c%x%*c%x%*c%x%*c%x%*c%x", 102 &ar711_base_mac[0], &ar711_base_mac[1], 103 &ar711_base_mac[2], &ar711_base_mac[3], 104 &ar711_base_mac[4], &ar711_base_mac[5]); 105 if (count < 6) 106 memset(ar711_base_mac, 0, 107 sizeof(ar711_base_mac)); 108 freeenv(var); 109 } 110} 111 112#if defined(SOC_VENDOR) || defined(SOC_MODEL) || defined(SOC_REV) 113static SYSCTL_NODE(_hw, OID_AUTO, soc, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 114 "System on Chip information"); 115#endif 116#if defined(SOC_VENDOR) 117static char hw_soc_vendor[] = SOC_VENDOR; 118SYSCTL_STRING(_hw_soc, OID_AUTO, vendor, CTLFLAG_RD, hw_soc_vendor, 0, 119 "SoC vendor"); 120#endif 121#if defined(SOC_MODEL) 122static char hw_soc_model[] = SOC_MODEL; 123SYSCTL_STRING(_hw_soc, OID_AUTO, model, CTLFLAG_RD, hw_soc_model, 0, 124 "SoC model"); 125#endif 126#if defined(SOC_REV) 127static char hw_soc_revision[] = SOC_REV; 128SYSCTL_STRING(_hw_soc, OID_AUTO, revision, CTLFLAG_RD, hw_soc_revision, 0, 129 "SoC revision"); 130#endif 131 132#if defined(DEVICE_VENDOR) || defined(DEVICE_MODEL) || defined(DEVICE_REV) 133static SYSCTL_NODE(_hw, OID_AUTO, device, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 134 "Board information"); 135#endif 136#if defined(DEVICE_VENDOR) 137static char hw_device_vendor[] = DEVICE_VENDOR; 138SYSCTL_STRING(_hw_device, OID_AUTO, vendor, CTLFLAG_RD, hw_device_vendor, 0, 139 "Board vendor"); 140#endif 141#if defined(DEVICE_MODEL) 142static char hw_device_model[] = DEVICE_MODEL; 143SYSCTL_STRING(_hw_device, OID_AUTO, model, CTLFLAG_RD, hw_device_model, 0, 144 "Board model"); 145#endif 146#if defined(DEVICE_REV) 147static char hw_device_revision[] = DEVICE_REV; 148SYSCTL_STRING(_hw_device, OID_AUTO, revision, CTLFLAG_RD, hw_device_revision, 0, 149 "Board revision"); 150#endif 151 152void 153platform_start(__register_t a0 __unused, __register_t a1 __unused, 154 __register_t a2 __unused, __register_t a3 __unused) 155{ 156 uint64_t platform_counter_freq; 157 int argc = 0, i; 158 char **argv = NULL; 159#ifndef AR531X_ENV_UBOOT 160 char **envp = NULL; 161#endif 162 vm_offset_t kernend; 163 164 /* 165 * clear the BSS and SBSS segments, this should be first call in 166 * the function 167 */ 168 kernend = (vm_offset_t)&end; 169 memset(&edata, 0, kernend - (vm_offset_t)(&edata)); 170 171 mips_postboot_fixup(); 172 173 /* Initialize pcpu stuff */ 174 mips_pcpu0_init(); 175 176 /* 177 * Until some more sensible abstractions for uboot/redboot 178 * environment handling, we have to make this a compile-time 179 * hack. The existing code handles the uboot environment 180 * very incorrectly so we should just ignore initialising 181 * the relevant pointers. 182 */ 183#ifndef AR531X_ENV_UBOOT 184 argc = a0; 185 argv = (char**)a1; 186 envp = (char**)a2; 187#endif 188 /* 189 * Protect ourselves from garbage in registers 190 */ 191 if (MIPS_IS_VALID_PTR(envp)) { 192 for (i = 0; envp[i]; i += 2) { 193 if (strcmp(envp[i], "memsize") == 0) 194 realmem = btoc(strtoul(envp[i+1], NULL, 16)); 195 } 196 } 197 198 ar5315_detect_sys_type(); 199 200// RedBoot SDRAM Detect is missing 201// ar531x_detect_mem_size(); 202 203 /* 204 * Just wild guess. RedBoot let us down and didn't reported 205 * memory size 206 */ 207 if (realmem == 0) 208 realmem = btoc(16*1024*1024); 209 210 /* 211 * Allow build-time override in case Redboot lies 212 * or in other situations (eg where there's u-boot) 213 * where there isn't (yet) a convienent method of 214 * being told how much RAM is available. 215 * 216 * This happens on at least the Ubiquiti LS-SR71A 217 * board, where redboot says there's 16mb of RAM 218 * but in fact there's 32mb. 219 */ 220#if defined(AR531X_REALMEM) 221 realmem = btoc(AR531X_REALMEM); 222#endif 223 224 /* phys_avail regions are in bytes */ 225 phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end); 226 phys_avail[1] = ctob(realmem); 227 228 dump_avail[0] = phys_avail[0]; 229 dump_avail[1] = phys_avail[1] - phys_avail[0]; 230 231 physmem = realmem; 232 233 /* 234 * ns8250 uart code uses DELAY so ticker should be inititalized 235 * before cninit. And tick_init_params refers to hz, so * init_param1 236 * should be called first. 237 */ 238 init_param1(); 239 boothowto |= (RB_SERIAL | RB_MULTIPLE); /* Use multiple consoles */ 240// boothowto |= RB_VERBOSE; 241// boothowto |= (RB_SINGLE); 242 243 /* Detect the system type - this is needed for subsequent chipset-specific calls */ 244 245 ar531x_device_soc_init(); 246 ar531x_detect_sys_frequency(); 247 248 platform_counter_freq = ar531x_cpu_freq(); 249 mips_timer_init_params(platform_counter_freq, 1); 250 cninit(); 251 init_static_kenv(boot1_env, sizeof(boot1_env)); 252 253 printf("CPU platform: %s\n", ar5315_get_system_type()); 254 printf("CPU Frequency=%d MHz\n", ar531x_cpu_freq() / 1000000); 255 printf("CPU DDR Frequency=%d MHz\n", ar531x_ddr_freq() / 1000000); 256 printf("CPU AHB Frequency=%d MHz\n", ar531x_ahb_freq() / 1000000); 257 258 printf("platform frequency: %lld\n", platform_counter_freq); 259 printf("arguments: \n"); 260 printf(" a0 = %08x\n", a0); 261 printf(" a1 = %08x\n", a1); 262 printf(" a2 = %08x\n", a2); 263 printf(" a3 = %08x\n", a3); 264 265 strcpy(cpu_model, ar5315_get_system_type()); 266 267 /* 268 * XXX this code is very redboot specific. 269 */ 270 printf("Cmd line:"); 271 if (MIPS_IS_VALID_PTR(argv)) { 272 for (i = 0; i < argc; i++) { 273 printf(" %s", argv[i]); 274 boothowto |= boot_parse_arg(argv[i]); 275 } 276 } 277 else 278 printf ("argv is invalid"); 279 printf("\n"); 280 281 printf("Environment:\n"); 282#if 0 283 if (MIPS_IS_VALID_PTR(envp)) { 284 if (envp[0] && strchr(envp[0], '=') ) { 285 char *env_val; // 286 for (i = 0; envp[i]; i++) { 287 env_val = strchr(envp[i], '='); 288 /* Not sure if we correct to change data, but env in RAM */ 289 *(env_val++) = '\0'; 290 printf("= %s = %s\n", envp[i], env_val); 291 kern_setenv(envp[i], env_val); 292 } 293 } else { 294 for (i = 0; envp[i]; i+=2) { 295 printf(" %s = %s\n", envp[i], envp[i+1]); 296 kern_setenv(envp[i], envp[i+1]); 297 } 298 } 299 } 300 else 301 printf ("envp is invalid\n"); 302#else 303 printf ("envp skiped\n"); 304#endif 305 306 /* Redboot if_are MAC address is in the environment */ 307 ar5315_redboot_get_macaddr(); 308 309 init_param2(physmem); 310 mips_cpu_init(); 311 pmap_bootstrap(); 312 mips_proc0_init(); 313 mutex_init(); 314 315 ar531x_device_start(); 316 317 kdb_init(); 318#ifdef KDB 319 if (boothowto & RB_KDB) 320 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger"); 321#endif 322 323} 324